![]() Interference detection is conducted between the tool OBBs and the gray octants of the surface octree with the separating axis theorem. In this method, in order to simplify the computation process of updating tool positions and orientations in 5-axis machining, the cutter and cutter holder are modeled by a hierarchical OBB structure, whereas the workpiece surfaces are approximated by an octree. Based on the hierarchical oriented bounding box (OBB) which is used in virtual reality to detect spatial collisions between 3D objects, a new global interference detection method is developed in this paper. Global interference detection is a critical problem in 5-axis NC machining of free-form surfaces. The ArcScene plug-in is characteristic of a time complexity of O(N), strong data structure in terms of spatial analysis, user-friendly operation, high robustness and good extendibility, and therefore it enriches ArcScene functionalities and users can benefit from the new plug-in for various applications. In this study, we have successfully developed an ArcScene plug-in for converting OBJ and VTK file formats into MultiPatch, for accessing and editing MultiPatch files, and for tracing 3D contours based on MultiPatch. But there are obvious limitations: (1) ArcScene does not support conversion of popular 3D formats such as Wavefront Objects (OBJ) and Visualization ToolKit (VTK) into MultiPatch (2) after the conversion, the entire dataset only forms one patch which is inconvenient for further spatial analysis (3) ArcScene does not support 3D contouring. It also supports conversion of 3D file formats into MultiPatch. As popular GIS software, ArcScene supports MultiPatch format for modeling and spatial analysis of volumetric data. The tool could be used to extrude features between surfaces is Extrude Between.įor information about converting a 2D shapefile to 3D in ArcGIS 9.Representation of volumetric data is necessary in hydrology, meteorology, ecology, environmental science and so on for modeling and visualization. This is achieved by extruding between the two surfaces for a given polygon area to create a multipatch bounding volume. For example, an energy company may want to create subsurface blocks between surfaces representing geological horizons. If an underlying elevation surface, such as a raster, TIN, or terrain dataset surface, on which the 2D features reside is available, the Interpolate Shape tool can be used to interpolate z-values for the 2D features from the elevation surface.ģD features can also be created by extruding 2D features between surfaces. Interpolating z-values using a surface layer ![]() If the z-values of features, such as heights, are available as attributes of the 2D feature dataset, the attributes can be converted into z-values of the features to generate 3D features using the Feature to 3D By Attribute tool. Check 3D Analyst if it is not already checked. ![]() Before running the tools, please verify that 3D Analyst extension is turned on by navigating to Customize > Extensions.
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